About this 3D model

I tried many times to print thing:19304 (in PLA) however the outcomes were disappointing. The nipples & divots for the axes were too small, so the concentric didn't stay together. I changed the whosawhatsis' original OpenSCAD script to increase the size of both nipples & divots. If anything, they are a bit too big however this is nothing an xacto knife couldn't take care of... The SCAD file is close, but not the exact one used to produce the STL. I once again forgot to save my updated file in OpenSCAD.